1 /* 2 * Copyright (C) 2008 The Android Open Source Project 3 * Copyright (c) 2010-2014 The Linux Foundation. All rights reserved. 4 * 5 * Licensed under the Apache License, Version 2.0 (the "License"); 6 * you may not use this file except in compliance with the License. 7 * You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 */ 17 18 #include <sys/mman.h> 19 20 #include <cutils/log.h> 21 #include <cutils/properties.h> 22 #include <dlfcn.h> 23 24 #include <hardware/hardware.h> 25 26 #include <fcntl.h> 27 #include <errno.h> 28 #include <sys/ioctl.h> 29 #include <string.h> 30 #include <stdlib.h> 31 #include <pthread.h> 32 #include <cutils/atomic.h> 33 34 #include <linux/fb.h> 35 #include <linux/msm_mdp.h> 36 37 #include <GLES/gl.h> 38 39 #include "gralloc_priv.h" 40 #include "fb_priv.h" 41 #include "gr.h" 42 #include <cutils/properties.h> 43 #include <profiler.h> 44 45 #define EVEN_OUT(x) if (x & 0x0001) {x--;} 46 47 enum { 48 PAGE_FLIP = 0x00000001, 49 }; 50 51 struct fb_context_t { 52 framebuffer_device_t device; 53 //fd - which is returned on open 54 int fbFd; 55 }; 56 57 static int fb_setSwapInterval(struct framebuffer_device_t* dev, 58 int interval) 59 { 60 //XXX: Get the value here and implement along with 61 //single vsync in HWC 62 char pval[PROPERTY_VALUE_MAX]; 63 property_get("debug.egl.swapinterval", pval, "-1"); 64 int property_interval = atoi(pval); 65 if (property_interval >= 0) 66 interval = property_interval; 67 68 private_module_t* m = reinterpret_cast<private_module_t*>( 69 dev->common.module); 70 if (interval < dev->minSwapInterval || interval > dev->maxSwapInterval) 71 return -EINVAL; 72 73 m->swapInterval = interval; 74 return 0; 75 } 76 77 static int fb_post(struct framebuffer_device_t* dev, buffer_handle_t buffer) 78 { 79 private_module_t* m = 80 reinterpret_cast<private_module_t*>(dev->common.module); 81 private_handle_t *hnd = static_cast<private_handle_t*> 82 (const_cast<native_handle_t*>(buffer)); 83 fb_context_t *ctx = reinterpret_cast<fb_context_t*>(dev); 84 const unsigned int offset = (unsigned int) (hnd->base - 85 m->framebuffer->base); 86 m->info.activate = FB_ACTIVATE_VBL; 87 m->info.yoffset = (int)(offset / m->finfo.line_length); 88 if (ioctl(ctx->fbFd, FBIOPUT_VSCREENINFO, &m->info) == -1) { 89 ALOGE("%s: FBIOPUT_VSCREENINFO for primary failed, str: %s", 90 __FUNCTION__, strerror(errno)); 91 return -errno; 92 } 93 return 0; 94 } 95 96 static int fb_compositionComplete(struct framebuffer_device_t* dev) 97 { 98 // TODO: Properly implement composition complete callback 99 if(!dev) { 100 return -1; 101 } 102 glFinish(); 103 104 return 0; 105 } 106 107 int mapFrameBufferLocked(framebuffer_device_t *dev) 108 { 109 private_module_t* module = 110 reinterpret_cast<private_module_t*>(dev->common.module); 111 fb_context_t *ctx = reinterpret_cast<fb_context_t*>(dev); 112 // already initialized... 113 if (module->framebuffer) { 114 return 0; 115 } 116 char const * const device_template[] = { 117 "/dev/graphics/fb%u", 118 "/dev/fb%u", 119 0 }; 120 121 int fd = -1; 122 int i=0; 123 char name[64]; 124 char property[PROPERTY_VALUE_MAX]; 125 126 while ((fd==-1) && device_template[i]) { 127 snprintf(name, 64, device_template[i], 0); 128 fd = open(name, O_RDWR, 0); 129 i++; 130 } 131 if (fd < 0) 132 return -errno; 133 134 struct fb_fix_screeninfo finfo; 135 if (ioctl(fd, FBIOGET_FSCREENINFO, &finfo) == -1) { 136 close(fd); 137 return -errno; 138 } 139 140 struct fb_var_screeninfo info; 141 if (ioctl(fd, FBIOGET_VSCREENINFO, &info) == -1) { 142 close(fd); 143 return -errno; 144 } 145 146 info.reserved[0] = 0; 147 info.reserved[1] = 0; 148 info.reserved[2] = 0; 149 info.xoffset = 0; 150 info.yoffset = 0; 151 info.activate = FB_ACTIVATE_NOW; 152 153 /* Interpretation of offset for color fields: All offsets are from the 154 * right, inside a "pixel" value, which is exactly 'bits_per_pixel' wide 155 * (means: you can use the offset as right argument to <<). A pixel 156 * afterwards is a bit stream and is written to video memory as that 157 * unmodified. This implies big-endian byte order if bits_per_pixel is 158 * greater than 8. 159 */ 160 161 if(info.bits_per_pixel == 32) { 162 /* 163 * Explicitly request RGBA_8888 164 */ 165 info.bits_per_pixel = 32; 166 info.red.offset = 24; 167 info.red.length = 8; 168 info.green.offset = 16; 169 info.green.length = 8; 170 info.blue.offset = 8; 171 info.blue.length = 8; 172 info.transp.offset = 0; 173 info.transp.length = 8; 174 175 /* Note: the GL driver does not have a r=8 g=8 b=8 a=0 config, so if we 176 * do not use the MDP for composition (i.e. hw composition == 0), ask 177 * for RGBA instead of RGBX. */ 178 if (property_get("debug.sf.hw", property, NULL) > 0 && 179 atoi(property) == 0) 180 module->fbFormat = HAL_PIXEL_FORMAT_RGBX_8888; 181 else if(property_get("debug.composition.type", property, NULL) > 0 && 182 (strncmp(property, "mdp", 3) == 0)) 183 module->fbFormat = HAL_PIXEL_FORMAT_RGBX_8888; 184 else 185 module->fbFormat = HAL_PIXEL_FORMAT_RGBA_8888; 186 } else { 187 /* 188 * Explicitly request 5/6/5 189 */ 190 info.bits_per_pixel = 16; 191 info.red.offset = 11; 192 info.red.length = 5; 193 info.green.offset = 5; 194 info.green.length = 6; 195 info.blue.offset = 0; 196 info.blue.length = 5; 197 info.transp.offset = 0; 198 info.transp.length = 0; 199 module->fbFormat = HAL_PIXEL_FORMAT_RGB_565; 200 } 201 202 //adreno needs 4k aligned offsets. Max hole size is 4096-1 203 unsigned int size = roundUpToPageSize(info.yres * info.xres * 204 (info.bits_per_pixel/8)); 205 206 /* 207 * Request NUM_BUFFERS screens (at least 2 for page flipping) 208 */ 209 int numberOfBuffers = (int)(finfo.smem_len/size); 210 ALOGV("num supported framebuffers in kernel = %d", numberOfBuffers); 211 212 if (property_get("debug.gr.numframebuffers", property, NULL) > 0) { 213 int num = atoi(property); 214 if ((num >= NUM_FRAMEBUFFERS_MIN) && (num <= NUM_FRAMEBUFFERS_MAX)) { 215 numberOfBuffers = num; 216 } 217 } 218 if (numberOfBuffers > NUM_FRAMEBUFFERS_MAX) 219 numberOfBuffers = NUM_FRAMEBUFFERS_MAX; 220 221 ALOGV("We support %d buffers", numberOfBuffers); 222 223 //consider the included hole by 4k alignment 224 uint32_t line_length = (info.xres * info.bits_per_pixel / 8); 225 info.yres_virtual = (uint32_t) ((size * numberOfBuffers) / line_length); 226 227 uint32_t flags = PAGE_FLIP; 228 229 if (info.yres_virtual < ((size * 2) / line_length) ) { 230 // we need at least 2 for page-flipping 231 info.yres_virtual = (int)(size / line_length); 232 flags &= ~PAGE_FLIP; 233 ALOGW("page flipping not supported (yres_virtual=%d, requested=%d)", 234 info.yres_virtual, info.yres*2); 235 } 236 237 if (ioctl(fd, FBIOGET_VSCREENINFO, &info) == -1) { 238 close(fd); 239 return -errno; 240 } 241 242 if (int(info.width) <= 0 || int(info.height) <= 0) { 243 // the driver doesn't return that information 244 // default to 160 dpi 245 info.width = (uint32_t)(((float)(info.xres) * 25.4f)/160.0f + 0.5f); 246 info.height = (uint32_t)(((float)(info.yres) * 25.4f)/160.0f + 0.5f); 247 } 248 249 float xdpi = ((float)(info.xres) * 25.4f) / (float)info.width; 250 float ydpi = ((float)(info.yres) * 25.4f) / (float)info.height; 251 252 #ifdef MSMFB_METADATA_GET 253 struct msmfb_metadata metadata; 254 memset(&metadata, 0 , sizeof(metadata)); 255 metadata.op = metadata_op_frame_rate; 256 if (ioctl(fd, MSMFB_METADATA_GET, &metadata) == -1) { 257 ALOGE("Error retrieving panel frame rate"); 258 close(fd); 259 return -errno; 260 } 261 float fps = (float)metadata.data.panel_frame_rate; 262 #else 263 //XXX: Remove reserved field usage on all baselines 264 //The reserved[3] field is used to store FPS by the driver. 265 float fps = info.reserved[3] & 0xFF; 266 #endif 267 ALOGI("using (fd=%d)\n" 268 "id = %s\n" 269 "xres = %d px\n" 270 "yres = %d px\n" 271 "xres_virtual = %d px\n" 272 "yres_virtual = %d px\n" 273 "bpp = %d\n" 274 "r = %2u:%u\n" 275 "g = %2u:%u\n" 276 "b = %2u:%u\n", 277 fd, 278 finfo.id, 279 info.xres, 280 info.yres, 281 info.xres_virtual, 282 info.yres_virtual, 283 info.bits_per_pixel, 284 info.red.offset, info.red.length, 285 info.green.offset, info.green.length, 286 info.blue.offset, info.blue.length 287 ); 288 289 ALOGI("width = %d mm (%f dpi)\n" 290 "height = %d mm (%f dpi)\n" 291 "refresh rate = %.2f Hz\n", 292 info.width, xdpi, 293 info.height, ydpi, 294 fps 295 ); 296 297 298 if (ioctl(fd, FBIOGET_FSCREENINFO, &finfo) == -1) { 299 close(fd); 300 return -errno; 301 } 302 303 if (finfo.smem_len <= 0) { 304 close(fd); 305 return -errno; 306 } 307 308 module->flags = flags; 309 module->info = info; 310 module->finfo = finfo; 311 module->xdpi = xdpi; 312 module->ydpi = ydpi; 313 module->fps = fps; 314 module->swapInterval = 1; 315 316 CALC_INIT(); 317 318 /* 319 * map the framebuffer 320 */ 321 322 module->numBuffers = info.yres_virtual / info.yres; 323 module->bufferMask = 0; 324 //adreno needs page aligned offsets. Align the fbsize to pagesize. 325 unsigned int fbSize = roundUpToPageSize(finfo.line_length * info.yres)* 326 module->numBuffers; 327 void* vaddr = mmap(0, fbSize, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0); 328 if (vaddr == MAP_FAILED) { 329 ALOGE("Error mapping the framebuffer (%s)", strerror(errno)); 330 close(fd); 331 return -errno; 332 } 333 //store the framebuffer fd in the ctx 334 ctx->fbFd = fd; 335 #ifdef MSMFB_METADATA_GET 336 memset(&metadata, 0 , sizeof(metadata)); 337 metadata.op = metadata_op_get_ion_fd; 338 // get the ION fd for the framebuffer, as GPU needs ION fd 339 if (ioctl(fd, MSMFB_METADATA_GET, &metadata) == -1) { 340 ALOGE("Error getting ION fd (%s)", strerror(errno)); 341 close(fd); 342 return -errno; 343 } 344 if(metadata.data.fbmem_ionfd < 0) { 345 ALOGE("Error: Ioctl returned invalid ION fd = %d", 346 metadata.data.fbmem_ionfd); 347 close(fd); 348 return -errno; 349 } 350 fd = metadata.data.fbmem_ionfd; 351 #endif 352 // Create framebuffer handle using the ION fd 353 module->framebuffer = new private_handle_t(fd, fbSize, 354 private_handle_t::PRIV_FLAGS_USES_ION, 355 BUFFER_TYPE_UI, 356 module->fbFormat, info.xres, info.yres); 357 module->framebuffer->base = uint64_t(vaddr); 358 memset(vaddr, 0, fbSize); 359 //Enable vsync 360 int enable = 1; 361 ioctl(ctx->fbFd, MSMFB_OVERLAY_VSYNC_CTRL, &enable); 362 return 0; 363 } 364 365 static int mapFrameBuffer(framebuffer_device_t *dev) 366 { 367 int err = -1; 368 char property[PROPERTY_VALUE_MAX]; 369 if((property_get("debug.gralloc.map_fb_memory", property, NULL) > 0) && 370 (!strncmp(property, "1", PROPERTY_VALUE_MAX ) || 371 (!strncasecmp(property,"true", PROPERTY_VALUE_MAX )))) { 372 private_module_t* module = 373 reinterpret_cast<private_module_t*>(dev->common.module); 374 pthread_mutex_lock(&module->lock); 375 err = mapFrameBufferLocked(dev); 376 pthread_mutex_unlock(&module->lock); 377 } 378 return err; 379 } 380 381 /*****************************************************************************/ 382 383 static int fb_close(struct hw_device_t *dev) 384 { 385 fb_context_t* ctx = (fb_context_t*)dev; 386 if (ctx) { 387 #ifdef MSMFB_METADATA_GET 388 if(ctx->fbFd >=0) { 389 close(ctx->fbFd); 390 } 391 #endif 392 //Hack until fbdev is removed. Framework could close this causing hwc a 393 //pain. 394 //free(ctx); 395 } 396 return 0; 397 } 398 399 int fb_device_open(hw_module_t const* module, const char* name, 400 hw_device_t** device) 401 { 402 int status = -EINVAL; 403 if (!strcmp(name, GRALLOC_HARDWARE_FB0)) { 404 alloc_device_t* gralloc_device; 405 status = gralloc_open(module, &gralloc_device); 406 if (status < 0) 407 return status; 408 409 /* initialize our state here */ 410 fb_context_t *dev = (fb_context_t*)malloc(sizeof(*dev)); 411 if(dev == NULL) { 412 gralloc_close(gralloc_device); 413 return status; 414 } 415 memset(dev, 0, sizeof(*dev)); 416 417 /* initialize the procs */ 418 dev->device.common.tag = HARDWARE_DEVICE_TAG; 419 dev->device.common.version = 0; 420 dev->device.common.module = const_cast<hw_module_t*>(module); 421 dev->device.common.close = fb_close; 422 dev->device.setSwapInterval = fb_setSwapInterval; 423 dev->device.post = fb_post; 424 dev->device.setUpdateRect = 0; 425 dev->device.compositionComplete = fb_compositionComplete; 426 427 status = mapFrameBuffer((framebuffer_device_t*)dev); 428 private_module_t* m = (private_module_t*)dev->device.common.module; 429 if (status >= 0) { 430 int stride = m->finfo.line_length / (m->info.bits_per_pixel >> 3); 431 const_cast<uint32_t&>(dev->device.flags) = 0; 432 const_cast<uint32_t&>(dev->device.width) = m->info.xres; 433 const_cast<uint32_t&>(dev->device.height) = m->info.yres; 434 const_cast<int&>(dev->device.stride) = stride; 435 const_cast<int&>(dev->device.format) = m->fbFormat; 436 const_cast<float&>(dev->device.xdpi) = m->xdpi; 437 const_cast<float&>(dev->device.ydpi) = m->ydpi; 438 const_cast<float&>(dev->device.fps) = m->fps; 439 const_cast<int&>(dev->device.minSwapInterval) = 440 PRIV_MIN_SWAP_INTERVAL; 441 const_cast<int&>(dev->device.maxSwapInterval) = 442 PRIV_MAX_SWAP_INTERVAL; 443 const_cast<int&>(dev->device.numFramebuffers) = m->numBuffers; 444 dev->device.setUpdateRect = 0; 445 446 *device = &dev->device.common; 447 } 448 449 // Close the gralloc module 450 gralloc_close(gralloc_device); 451 } 452 return status; 453 } 454
